7. Two positive point charges 2Q and 3Q are separated by a distance R. If the charge 2Q experiences a force of magnitude F when the separation is R, what is the magnitude of the force on the charge 3Q when the separation is (1/2)R?
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- 2. Three-point charges q. (+2.0µC), q2 (–1.0µC) and q2 (+3.0µC) are placed in vacuum as shown in the figure. Find the magnitude and direction of the force on charge q3 due to charges qı and q2. 3.0ст 300 6.0cmA conducting spherical shell of inner radius r1 and outer radius r2 has a charge Q on it. An additional charge, also Q, is en added to the sphere. What is the resulting charge per unit area on the outer surface of the sphere? 2 b. No answer given is correct. 4m(r₂ - r₁)² a. C. 2 47(1₂)² d. 2m(r^₂)²16. Two point charges qA = +10.0 µC and qB = -40.0 µC and a third particle with unknown charge qC are located on the x axis. The particle qA is at the origin, and qB is at x = 12.0 cm. The third particle is to be placed so that each particle is in equilibrium under the action of the electric forces exerted by the other two particles. a) The diagrams below show a positively charged qC in each of the three possible locations with respect to qA and qB. Draw and label vectors (for example, -->F AB) showing the directions of the forces on all three particles, and circle any of the diagrams in which there are opposing forces on all three charges.
- 16. Imagine three point charges at the corners of an isosceles triangle: q₁= 2.22 x10-¹0 C, 92= 3.33 nC, and q3= 4.44x108 C. The charges qi and q2 are 1.00 m apart and form the triangle's base. The triangle is 0.250 m tall. If q3 is at the top, what is the magnitude and direction of the resultant force on q3? (4.08x10-6 N, 150.2°)2. Three-point charges q₁ (+1.0μC), qz (-2.0µC) and q2 (+3.0µC) are placed in vacuum as shown in the figure. Find the magnitude and direction of the force on charge q3 due to charges q₁ and q2. 3.0cm 30⁰ 6.0cm 93.2.